CVE-2026-27508
Medium
Description
Smoothwall Express versions prior to 3.1 Update 13 contain a reflected cross-site scripting vulnerability in the /redirect.cgi endpoint due to improper sanitation of the url parameter. Attackers can craft malicious URLs with javascript: schemes that execute arbitrary JavaScript in victims' browsers when clicked through the unsanitized link.
SeverityMedium
CVSS5.4
Exploit probability—
ProductSmoothwall Express
PublishedMar 30, 2026
First seenMar 30, 2026
Weakness typeCWE-79Cross-site scripting (XSS)
How to fix
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| smoothwall smoothwall_express | v ≤ 3.0, 3.1 | — |
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